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ASRock

ASRock B550M-ITX/AC Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors motherboard Mini ITX

  • Based on 779 reviews
Condition: New
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Nov 26 – Nov 30
Order within 2 hours and 32 minutes
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Style: Motherboard


Features

  • Supports AMD AM4 Socket Ryzen 3000, 3000 G-Series, 4000 G-Series, 5000 and 5000 G-Series Desktop Processors but not compatible with AMD Athlon Processors
  • Supports DDR4 4733+ (OC)
  • Graphics Output: DisplayPort, HDMI
  • 7.1 CH HD Audio (Realtek ALC887 Audio Codec)

Description

Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well. Operating System Microsoft Windows 10 64-bit.

Brand: ASRock


CPU Socket: Socket AM4


Compatible Devices: Personal Computer


RAM Memory Technology: DDR4


Compatible Processors: AMD Ryzen 5000/4000/3000 Series


Chipset Type: AMD B550


Memory Clock Speed: 2400 MHz


Platform: Windows 10, Windows 11


Model Name: B550M-ITX/AC


CPU Model: 5X86


Standing screen display size: ‎75


Processor: ‎5x86


RAM: ‎DDR4


Memory Speed: ‎2400 MHz


Wireless Type: ‎Bluetooth


Number of USB 2.0 Ports: ‎1


Brand: ‎ASRock


Series: ‎B550M-ITX/AC


Item model number: ‎B550M-ITX/AC


Item Weight: ‎1.83 pounds


Product Dimensions: ‎11 x 8.5 x 2.5 inches


Item Dimensions LxWxH: ‎11 x 8.5 x 2.5 inches


Computer Memory Type: ‎DDR4 SDRAM


Flash Memory Size: ‎8 GB


Batteries: ‎1 CR2032 batteries required.


Manufacturer: ‎ASRock


Language: ‎English


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎June 16, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 26 – Nov 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • great affordable small form factor motherboard
Style: Motherboard
Review Image by Johnny Rage Johnny Rage
*B550 works with PBO on x3d processors *ARGB connectors *wifi *cheap *ASRock has really earned my respect lately great build quality, I build a SFF in the Fractal Ridge with a 5700X3d, 32gb ddr4, RX6750XT. Overall motherboard handled it all very well. did exactly what I needed it to do. It did require a bios update to get PBO on the X3d but that is normal, it was released after the product was made. ... show more
Reviewed in the United States on July 22, 2024 by Johnny Rage Johnny Rage
    • Hasn't let me down great for modest gaming.
Style: Motherboard
Before you start building I'd recommend swapping out wifi card with a ax211 or better. I put a ryzen 5 3600 in it, dual ddr4 16gb 3200mhz ram kit in it (32gb total). 500w psu, and a old 3060ti I had laying around in SFF case with handle. CPU and motherboard temp are close in temperature. So if gaming and CPU is around 63c motherboard would be displaying a temp of something like 58c. I'm only mentioning this cause people are saying the thermal plate for motherboard is too small. If you put something crazy on this board like a 4080 with a 5950x 16 core CPU, and 4000+mhz ddr4 ram. I can't say for sure, but I have no doubt that plate would be a problem. Keep in mind this is a budget board, and you shouldn't expect miracles. That being said me and my stepson played WWE 2k24 for hooooouuurrss multiple times on it so far. No issue at all. First time buying a ASRock board as well and the bios and ASRock apps seem kinda crude and dated compared to MSI or ROG, but definitely has everything you need to modify bios, fan speed, rgb etc. I kinda like it. I'm real happy with purchase. ... show more
Reviewed in the United States on March 12, 2024 by Ortron
    • Needs BIOS update for Ryzen 5 5600x processor
Style: Motherboard
Review Image by Mr. A Mr. A
Worked great after that. Nice, Simple little board! I had to flash it with a 3600 or 3700 processor. Takes about 5 min to flash, wireless worked decent. BIOS menus are clean, no frills. Keep in mind it takes about a minute 1st boot to post with new cpu. If you don't get video after a minute, its not coming up. With good BIOS+CPU powers up in that time. MB Does NOT have USB-C "flat" double edge connector female mount. ... show more
Reviewed in the United States on April 5, 2021 by Mr. A Mr. A
    • Not a new item and also not stable.
Style: Motherboard
This motherboard is not a brand new item. This is an open item and also missing manual & CD-ROM. During P.O.S.T there's an BIOS error 98. During OS boot after install , there's an ACPI errors observed . There's a bug in the firmware or hardware problem.
Reviewed in the United States on September 27, 2025 by realLaura
    • Good BIOS menu and function, experienced blue screen due to BIOS
Style: Motherboard
Used this board for a mini ITX build. I think the board is well built, includes the most important headers (no USB C header for case sadly) and has a good BIOS menu with plenty of settings to use XMP and other options. My Ryzen 5 5600x worked out of box and did not require a BIOS update. This board was 100% functional for the first 3 months I had it, then I started to experience blue screens that I could not solve. Finally, after a couple days and a few hours, I figured out that it was a BIOS issue and when I updated the BIOS and cleaned my PC, it worked fine again. I like the board, I think it has exceptional value in a budget board. I hope it continues to work into the future. ... show more
Reviewed in the United States on July 30, 2024 by bart
    • Cheap and good
Style: Motherboard
There aren't a lot of mini-ITX AM4 motherboards. Major downside is the single M.2 NVMe slot but for the price it was worth it.
Reviewed in the United States on June 6, 2025 by J Hu
    • Does the job, and very accessible detailed BIOS!
Style: Motherboard
Review Image by RamenBard RamenBard
The itx motherboard for its price is pretty good considering the offerings it gives to the consumer, excellent placement of fan connectors, cpu fan, sata, and more but it has a non reinforced pcie connection, along with a very dubious spot for the cmos jumper, and mine didn't come with cmos jumps even on it. ... show more
Reviewed in the United States on March 25, 2024 by RamenBard RamenBard
    • Paid for New, Got an Open Box
Style: Motherboard
Not sure how to rate this, because part of the rating is for the motherboard, and part is for Amazon. I gave 1 star to Amazon and 4 stars to the motherboard. That's an average score of 2.5, which I rounded up to 3. The Amazon Part I got an obviously open-box item instead of the new one I paid for. I won't buy any more computer components from Amazon because of that. That's no way to treat customers. Pros None that I can see. Cons Bad Amazon! No, no, no! The Motherboard Part Booted on the first try, and it seems to be functioning well. I had one blue screen crash, but I had several odd web applications open, and I think that one of them (or the combination thereof) caused the error. Other than that, I've had no problems. I've had good luck with ASRock motherboards (so far), and I tend to stick with a brand that works for me. Pros It's a good board for a small computer case. Hardware Monitor reports what looks like correct temperatures, which wasn't happening with the motherboard I replaced. Cons None that I can see. ... show more
Reviewed in the United States on December 12, 2023 by J Bennett

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